Consulta, cuanto costaria: Nintendo 3DS XL Black
Steam Controller:
So I think I figured out how it's supposed to work.
This is the link for a New Nintendo 3DS XL, black, etc. http://www.amazon.com/gp/product/B00E1A1SP6/ref=s9_dcacsd_bhz_bw_c_x_2
The link that the site wants is the BOOE1A1SP6 part. It's a little weird right now, but all the other products I tried to test that "failed" worked properly when I used the corresponding code instead of their whole link. It might be the bump you gave them, or it might just be a bug in general, but try using that part alone. It should solve your problems.