I hear you there. As a new vaper, my first regret was buying my first atomizer and battery from a storefront vape shop before shopping around. As soon as I got home I discovered they charged me double (also $120.00) what I might have paid for the exact same setup online. And he even had the nerve to suggest including a tip on the credit card authorization!
My second, and really only other regret, is buying a 30 ml bottle of almost every Halo tobacco flavor (9 of the 12) before having anything to actually compare them with and deciding if I really liked all of them! Sure, I got the sample sizes of all of them first (except for the 3 menthol ones - not my thing), but now I have at least four or five - untouched, and opened only for 48 hours to breathe - that I wish had been the Southern Classic (my new favorite). At least I can console myself in the fact that I haven't had an analog for 33 days, which is the longest period for me in over ten years!