Whoah senior member going bad on Baikal! Price is $2600 now, would you go for that? What do you go for since you've seen alot?
Lets say if you buy it for $2600 and say it makes about $10 a day after electricity (best to be conservative).
$2600 / $10 day = 260 days / 30days = about 8.6 months.
That's already at the end of 2018.
By the time you break even, they will most likely already/soon release a new updated miner and yours already outdated.
If you are fine with 8 months to break even, then that price will be great for you. For me 8 months is too long, I would rather just hold that $2600 value in BTC for 8 months and buy their future updated gear.
Who knows, by the end of the year BTC value might double so you can buy more gear.