Only pop 2, I have one.
Trying to figure out what this may be worth.
imgur.com/gallery/Bhg9hpa
There’s a PSA 10 staff on eBay for a couple thousand or best offer, will be interesting to see if/for what it’ll sell. Yours is the cheapest option for someone who wants an English 10 art run, so a good position to be in nevertheless. 
Scott has an '05 Tropical Tidal Wave in PSA 10 currently listed at $2000:
This 2005 card also has a pop of 2.
I purchased a PSA 10 Staff stamp 2008 Tropical Wind for £1450 last week (pop of 4) so I’d say around the $2000 range is a good place for you to start.