I have an older model of this (mid-late 90s) that I'm ready to pass along:

http://pikapackworks.com/

I flew with it once. I believe previous owner flew with only a handful of times. I believe there was only one 'standard' size at the time it was purchased.

I paid $150. Price is $150 firm.

Inquiries to h o. a r d b i k e s (at) Google's e-mail service (remove all spaces.)

Or friend request so we can PM-- but post here that you've sent the request as all my chainlink notifications go in a folder I don't often check.