Never a regret yet.
I have won, been given, have purchased a quite a few- and have sold, tradedor gifted 5 guns in all were good choices in my mind to buy and let go. If a gun is hard to part with I don't. If it has no sentemental value andI do not see my self shoothin the gun in the future then I figure the gun must be worth more to somone else than me.
I have a few which I have been considering selling or trading latly, And they just have not fully met my criteria for letting out of my stable yet