Is there any site that shows historical sales price history for ledger and trezor?  I know that when it's BF, there's a sale almost every year right?  However, I think they have a sale during the year as well so on average it's a sale 2 times a year with ledger?  Is it the same with trezor?


Ledger is 79 dollars now but there is a promotion that you get 30 dollars in Bitcoin if you buy the default color one but not the other color ones. So is that a good deal for another ledger?  The thing is what was the price of ledger when it's on sale?  Was it 49 dollars or 59 dollars?  I think it was 59 dollars?  So this is essentially the lowest a nano ledger s plus or nano ledger s ever? 


What about trezor 3?  I think trezor 3 lowest price is 59 dollars when on sale?  Does anyone know when there will be another sale based on history for either ledger or trezor?