R.W.
Check e-bay for pumps. I bought my (at the time LOL) $300 Ameda purely Yours for $150 brand new off e-bay. It's now been used for 3 children...just the occasional pumping for the last two since I've been blessed to be able to stay home.
You can also call your insurance company and ask if they will cover the cost of a breast pump.
Sometimes Local WIC offices will have pumps available to buy or rent. Also Your local hospital or Lactation Consultant will be able to help you locate a good quality pump.