The only good thing about Bose 301's is that they may be the least offensive of all Bose speakers. With that said, they are still awful.
However, if you like them that's your business. Just don't expect to get any reinforcement or validation of your decision to buy and use them.
I might be tempted to buy them if the price was no more than $10. I know there are plenty of deaf people who will pay up to $100 or more for them. I'd sell them immediately then use the money to buy something that sounds good.
Friends don't let friends buy Bose.
Polks worst speaker is an order of magnitude better. I'm not a Polk fan either.
ARC SP9, HW19, RB300, Sumiko Blackbird: Front: Magnepan 1.7, 2 x 12" TL subs 2 bridged Crown XLS 402, 2 modified Dyna MK-III's. DBX-223XS, Behringer DSP1124P, rear: Acoustat Model 1/SPW-1, Behringer CX-2310, 2 Adcom GFA-545