A week ago a relative asked me to sell some furniture for her, on eBay. While I have the experience to utilize eBay (Anyone with a computer does

), I don't have the experience with antiques; let alone antique/retro furniture.
So who here can help me? I get 25% of whatever these babies sell for, and she doesn't want to pay someone to get them appraised... I just need to get a general idea of what to set the reserve to. I was thinking $150 per chair and $250 for the couch; is that too low, or too high?
Here they are:
http://www.eyesoute.com/antique
Heres the information she gave me (They were owned by her late husband, and were in his barber shop since the 50's)
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Three pieces (Two chairs, one couch) of chrome/naughide furniture from Barber Shop waiting room.
50 years old, 2 pieces excellent condition; one chair has a tear on the seat.
Manufactored by:
E.W. Harting Mfg. Co. Inc.
St. Louis, Missouri
North Hollywood, Cal.
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It'd be nice if these sold for a decent amount, but any amount is okay (She seems to think they won't fetch more than $300 together, but a friend of mine says they will 'sell for a lot, people pay a lot of money for retro stuff like that')
Thanks to anyone who can help me in advanced... A lot of the online, and 'real-world' places that appraise antiques, cost money (Sometimes more than the item is worth).