I watched someone speed test the brushed version of the Jumpshot ST it topped off at 16mph so I am willing to assume that the sct is just as slow.
The brushed model is about $215 add ~$23 for the diff gears, ~$50 for a Hobbywing WP10BL60 esc and then another ~$26 for a brushless motor off eBay...
I would be leary of the 22S right now, whenever you see a Horizon product on sale like that, especially one that isn't very popular, they are doing a firesale to get rid of unwanted inventory before they discontinue it. Most of the parts should be available for a while as the Losi Drag car uses...