CowBoom (Best Buy Company) has several pre-owned Apple iPod touch 4th Gen 64GB MP3 Player starting at $159.99 with free shipping after coupon code "Touch20".

Cowboom sells pre-owned products and grades them from 0 to 10.  While we usually advise you to stick to items with grades 5 through 7, most of these offerings are grade 4 which can include significant scratches or scuffs. But for a 64GB touch, it's a good price. They have a 30 day return policy.

This is way more than an MP3 player; videos, gaming, apps, and more.  It has gained popularity as the portable game machine of choice over the Nintendo DS, Sony PSP, etc. $0.99 per game is a lot cheaper than $49.99.