Try a local repairman. Mine had about 25 older machines for sale, less than $100. He also had a new Janome. There may be other options besides Wal-Mart as I found out after buying a new Singer for $199.99. I bought a 301A for $75 and a 457 Stylist ZigZag for $85. I love the little 301A, I haven't tried the 457 as yet (need to get some bobbins). I found a guy on eBay who sells 30 bobbins (Featherweight/301A) for $11.99. He also has bobbins for the 457 (30 for $11.99) as well. He has all types of bobbins available and I got the 60 I bought within three days. Next week I will order 60 for the 457 and I will be all set.
This might be another option if you have a reliable repairman who has used/cleaned/serviced machines for sale.