Well, as always you do need to know what you are buying and what it is worth.
I am shopping for Ruger Single-Action guns right now. I can't decide on .22/.22WMR and 32 H&R Magnum. But I'll narrow it down or simply buy the best deal on whichever comes along first.
But I search, browse, and click watch.
Then I go back and study and apply a more critical eye.
For instance I am in the market for the new Ruger Shopkeeper as a possible. I know the MSRP and I have seen other sites with a buy now that is lower then the MSRP. Therefore I will not get taken in the bidding and I will also have my LGS see what they can do for me. If my LGS is even close I will go with them just to keep them in business as they are the ones who help when others can't.
Colt M1911, AR-15 | S&W Model 19, Model 27| SIG P238 | Berreta 85B Cheetah | Ruger Blackhawk .357MAG, Bearcat "Shopkeeper" .22LR| Remington Marine Magnum SP 12GA., Model 700 SPS .223