I’m terrible at remembering dollar amounts for stuff I got in the BST and might not tell the truth even if I did remember them =P
#1 Playmaxx/Proyo rares from YYN BST in 2010
#2 Frozen Mammoth Peak from YYN BST in 2010
#3 mint Bape from YYN BST in 2010 or 2011
#4 Yogi Glacier Express from YYE store whenever it came out (last year? I forget)
#5 Black/Orange Acid Wash/Silver Splash Mutant DNA from YYE store in 2011
#6-9000. Bushman Avalanche/TE Gnarwhal/Works Gnarwhal/Black&Blue Acid Wash Skyline from YYN/YYE store and all about the same price iirc
#itsover9000 Everything else. Tons of stuff from the BST mostly. High end metals everywhere from about $40 to $120 with a couple YYE store purchases like Yuuksta/G-Funk/Boss.
I do my best to get the exact colorway I want but I am very busy with real life, so many times I won’t be paying attention to releases when an amazing one comes out so I need to get it on the BST months later (where I will typically pay much less anyway). I paid full retail for the GE and Mutant DNA and got the exact colorway that I wanted, I paid 40% retail for the Dietz I just got a few days ago and got the exact colorway I wanted. Whether I spend a few extra dollars on retail vs bst doesn’t really matter to me, having the piece in my collection/to play with that I will enjoy the most does.
As far as regrets…it’s really hard to say since sometimes things that are regrets at the time end up not being so regretful. I wanted a TE Gnarwhal really badly but they weren’t stocked in the YYN store so I bought the Works one here on YYE and then got the TE one later (probably also here on YYE). As it turns out I now strongly prefer the Works one to the TE one. The GE that I paid full retail for was sort of an impulse buy since I don’t like full size but I thought the shape was neat and loved the colorway and for quite some time it underwhelmed me, but now it is among my favorites. I generally try to be patient these days and not settle for something I don’t want. It’s the reason I don’t own a Chief at all yet. I guess I sort of regret buying the Bape I have, but I bet I would regret not buying it even more if I had passed on it!
I have a lot of regrets for things I DIDN’T buy, that’s for sure. After a year off from actually buying yoyos I had a PM box full of last year’s messages when I started checking stuff out again a couple weeks ago, mostly BST related. Many good deals, and a few missed deals, the most disappointing of all being when I failed to pull the trigger fast enough on jhauxfan’s Clown Town 2 Peak. There are other rare Peak, 888, FHZ and Playmaxx/Proyo related ones over the past few years but the Clown Town 2 is the most recent one and the one that hurt the most because he had it available for quite some time and I knew I wanted it but I just waited too long like a dummy. That’s okay though, for some of them the chase is part of the fun 
There will be another one day. Or maybe even the same one.
