Honestly for pre builts it's both in stock, available and cheaper than buying separately so in this crazy market I'd say yes, but only if you actually need a full system upgrade. Otherwise you're paying for all the other components just to get your hands on the GPU
My PC is overdue an upgrade hence why I was looking. The other option is to do the opposite and upgrade the rest of the system but stick with my GTX 1080 for a while in the hope that some sanity will return to the GPU market.