I would avoid the Fitness and Strength ebay ad. I got a multi-gym off of them, but the pulleys were so weak they needed replacement within 2 months. Their equipment is very affordable, and service is great, but I was really disappointed with the reliability. I would've claimed through warranty, but didn't want to do that every two months.
Of course, by the looks of it there's only 10 pulleys to replace. I went through a store called Crazy Cheap Fitness and bought 4inch pulleys (larger than the 100mm ones they provide) for around $20 each. While you're at it, you may as well by some thicker cable. They do this for $30 per cable (length is not considered).