I bought mine from Ikon Motorosports on ebay, always buy their products, always high quality and even refunded me half cost for missing 3m tape lol, even though didn't even ask for it, just let them know it was missing
It is been 7 months now, still looks and downforces my tesla like a champ
Fit and finish is good, I have few spoilers from them painted on other cars for even longer, OEM like fitment and finish.
This is not an advertising or anything, just happy customer
I got one of these last week: LINK
Promptly installed, looks great. Need to be careful on installing it, because a minor shift in position will result in not fitting well. But if you're careful (I was) it fits like a glove.
All in all I'm pleased - it's VERY lightweight, and if you squeeze it you can tell it was two halves fused together so not super strong - my only concern there is water seeping in through the seam. Overall it feels pretty solid, and I think it looks great which says a lot since I normally am not a fan of aftermarket bolt-on products.