Is there a results per page plugin?

Hey there, I've had a look in the plugins section but I can't spot anything that looks like what I want, but that could be because I don't know what you really call it but is there a plugin which allows customers to change the number of results per page?

ie a dropdown box or something which allows you to say you want 100 results per page even tho the default is 20

Do you mean search results, or ... ?

There's no mod I'm aware of that will allow the visitor to change the way pages are displayed, though some can be changed in admin.

Maybe this
http://www.zen-cart.com/showthread.php?74510-Set-number-of-products-displayed-per-page-%28support-thread%29
can help you, or at least point you in the right direction.

It gives the customer the possibility to choose how many product are shown on a page in the store.