Trying to get an idea on how many guys prefer trading using "secondary values" over $4$ on bigger beers like Barrel Aged Adjunct Trial, Barrel Aged Rocky Road, Nilerzzzz etc. I try and trade $4$ for beers I can just walk into my local brewery, total wine / bev mo and buy, but some bigger beers that are very hard if not impossible to trade for almost always require several lesser valued beers or bottles that have equal if not a higher secondary value and those I try and use secondary values to trade for. What is you're preference?
I don't trade very much, but with those I do, I have but one "caveat." "my price is your price" And I make it very clear that I would prefer it if my trading partner never goes above the cost of the beer I'm sending for what they're sending me (a few bucks difference is to be expected, but not more than that).
I don't think you'll find someone to go $4$ on whales or bottles like the ones you listed unless you're also offering whales... and in that instance the $ isn't really that important anymore. So I'd love to go $4$ on some of those with local stuff but I doubt it'd happen.
Binary options don't fit. Mine is the third way: rarity for rarity if it's a bigger bottle. I don't trade based on secondary prices because (a) I don't have any idea what they are & (b) I'm old & don't give a fuck what a bearded guy will pay for a whale. You have a good, limited beer to trade & so do I? Or a few "lesser" bottles that I really want? Let's do this!
When dealing with rare and in demand bottles, whether you look up values or not, typically they trade $4$ on secondary value. (secondary value can be subjective, but it works in general.) The secondary value is determined by supply and demand, so I If I really want something that the market values at $xxx, I need to offer a similarly valued bottle to land it. (It gets harder when trying to trade up for a white whale. Typically you have to offer a bit more if you are trading quantity.)
Yeah, I got blasted recently for trading a Tete 16 and a Maltvin for the new Crema. As another older dude that has traded beer since 2004, I just look for what I want and I try to get it. I don't care much for the secondary talks, and in many cases, they just agitate me when it drags out. I try to make fair offers that usually are both $4$ and rarity for rarity (desirability to desirability). Occasionally, I deviate from this, and I offer more $4$ (see above), but that is not my normal MO. On the opposite side, I even try to add plus bottles when I am short on the retail. That said, the bottles you listed need similarly rare bottles to go $4$.