1. For getting decent equipment on the lower-cost side, eBay and Craigslist will be your best friends. Best deals you'll find, just that you may need to pick items up yourself. That's how we've furnished half of our training facility, almost exclusively through Craigslist ads.
2. For new equipment, visit http://newyorkbarbells.com
- they're more reasonably priced than many manufacturers (the general rule with them is, so long as it doesn't have moving parts, you can trust it!
Their machines with lots of attachments aren't the best, though.) This would work perfectly fine for most people for a decent power rack that will allow all the safety you need for squats, benching, etc. - http://newyorkbarbells.com/92563.html
Otherwise, if you have low ceilings, this would be a good choice, too - http://newyorkbarbells.com/pro92560.html
, as well as this: http://newyorkbarbells.com/92565.html
. They also have fairly reasonable rates on benches and weight plates, but you could definitely do better with a Craigslist deal than what you'll find there.
Basically, if you get a good power rack, bench (preferably adjustable incline, but flat will suffice) bar and a few hundred pounds of plates, you should have everything you need to get stronger. It's pretty uncomplicated, but sometimes just finding the best deals for price are the toughest part!