Seems like an alright price for a high tier drive, didn't see any previous deals posted for the 4TB variant of this model but it's close enough in performance to the 980/990 Pros so maybe can use those as a point of price comparison.
Surcharges: 0% direct deposit, 0.9% card, 1% fee on all other payments.
phison E18 based drives has universal bug with flash cell degradation - single digit read/write speeds on old (6-12month) files.
make sure to firmware update this as soon as you get it.