rewritebase not working

Answer 1

add

   RewriteCond !\.(js|css)$

To your htaccess (after rewritebase) and it should work, also feel free to add image types to this expression.

I don't know what your application does, but I'm wondering why you would make price a variable that can be injected via the url. If this is part of a webshop or something, than passing along a price this way is a very very bad idea.