Karina, generally speaking, you don't really need bilingual books--you just need books in the minority language, in Spanish. Maybe your local library would even have a section of children's books in Spanish, or would be willing to start growing one? Although I've built up a large home library of books in our minority language, over the years, it's also true that I've taken full advantage of the collection of minority language books available at the library in town.
As for obtaining Spanish books online in thrifty ways, I invite others out there to offer suggestions!
Adam Beck is the founder of Bilingual Monkeys and The Bilingual Zoo, and the author of the popular non-fiction book Maximize Your Child's Bilingual Ability amzn.to/22XKuCt and the humorous novel How I Lost My Ear amzn.to/2EsjVRS, both available worldwide.
I have had some luck using "Craig's List" type sites in Spanish speaking countries. Just like in the U.S., you find people looking to unload their children's libraries after their kids have moved out. Usually the exchange rate works in your favor. The problem, of course, is shipping. If you have relatives or friends in a certain country, this can be negated somewhat by having them pick up the books and packing them in their luggage next time they are in the states.
The cheapest way is to borrow books from public libraries. You can keep them for several weeks.
Another way, if you have family overseas, ask them to buy some books for you, and bring them when visiting.
Also, the public libraries, at least here in Arizona do many book sales where you can get books as cheap as $1. Also, find out which libraries in your city offer bilingual (English-Spanish) story times. In some special celebrations they give away books for free.
Check also some Baby/Children yard sales on FB; you may find some in there too.
I have a friend who is a school teacher, and she can buy some books for me on Scholastic with a special discount for teachers too.
Half Price Books, if it exists in your area (I think they cover most if not all of USA) have a children's foreign language section. Even in the middle of monolingual Iowa I managed to find quite a few Spanish books there. It's usually right next to the kid's section, and separate for the adult foreign language section.
You could also try to exchange books with other bilingual families you know. I have mentioned this to my friends but so far we haven't got around to doing it. Books are fairly expensive in Spain plus they often tend to sell hardbacks (which are more expensive). I don't think half price bookshops exist and where I live there aren't any second hand bookshops...but try secondhand bookshops and charity shops too. I got my books mainly from Amazon as where I live there is little choice in minority language books especially children's and they are more expensive but am also starting to look at Ebay. Are there any other UK online discount bookshops that I could order books from? Even starting to consider buying a Kindle/Ebook as you can download many books cheaper (although I prefer the traditional books!).
Also, if your children are young and can't read yet, you can just use your English books you have and translate or make up the story in Spanish. It's just about them hearing the story in Spanish and the pictures helping them to understand what's going on and learning new words. Sometimes I shorten stories when reading in English to the kids...but of course I get caught out sometimes lol. My daughter is like, hey, you skipped when X, Y, Z happened!
What's on your mind right now? Just type and hit "Enter" to share it here!
Amy: Just received your novel Adam, just in time for the weekend! I already read 3 chapters and am loving the style! Congrats!
Feb 10, 2018 6:25:05 GMT 9
Adam Beck: That's so nice to hear, Amy! I look forward to more impressions as you continue reading!
Feb 10, 2018 10:46:14 GMT 9
Mayken: After writing a letter in the ML to her new friend for whom it is the ml, my daughter is now on the phone with her friend from ml country. (And hiding in her room with my phone. No more phone cords to hold her back.)
Feb 11, 2018 23:13:29 GMT 9
Nellie: Book ordered Adam!
Feb 15, 2018 6:20:36 GMT 9
Nellie: Mayken - so cute! The terrible teens are approaching!
Feb 15, 2018 6:21:21 GMT 9
Adam Beck: Nellie, thank you! I hope you enjoy it and I look forward to your impressions!
Feb 15, 2018 6:34:04 GMT 9
Wojtek: I found sample Eiken tests on grade 5 and 4 (There was Adam's article) and did the first part with my daughter (20 questions). On Grade 5 she did 16 of 20 correctly and on grade 4: 12 of 20. Not so bad though. She failed those where grammar was included.
Feb 15, 2018 20:43:25 GMT 9
Adam Beck: Wojtek, your daughter is still very young so I would say those are really positive results! Your efforts are clearly producing a lot of progress. Good for you, and good for your daughter!
Feb 16, 2018 7:52:23 GMT 9
Undraa: A big congrats from my end to you for your new book Adam!
Feb 16, 2018 16:50:56 GMT 9
Wojtek: Big thanks, Adam. Those tests on grade 5 are so basic but anyway they prove that my girl understands them and knows the answers. That was quite interesting experience.
Feb 16, 2018 16:54:32 GMT 9
Wojtek: Congratulations on your book, Adam! I read the beginning on Amazon and as always I have the impression you took several pages from the dictionary with a range of sophisticated words and just put them in. That's why the book will be very valuable for me.
Feb 16, 2018 17:01:19 GMT 9
Adam Beck: Wojtek, thanks! Even if you're unfamiliar with some of the vocabulary, I think the lively story will carry you through the book. I hope you enjoy it, and also find it useful for your English!
Feb 16, 2018 18:43:12 GMT 9
Dani: Hi everyone, It has been a while... Congrats on your new book Adam! Would love to get a copy too.
Feb 17, 2018 8:30:36 GMT 9