I got mine for about 1.3k-ish second-hand, if I remember correctly, but mine came with a complete set of extra tubes, among other stuff. Probably bit more after GST. You're probably looking at something around 1.6k+ shipped, maybe more, off the 2nd-hand market in the US if you want the -4pro.
Note that if you bring something in from the states, you have to check it out beforehand to make sure it has a multi-tap transformer inside so you can switch the voltages- if not, good luck finding a decently priced xformer than can take the SVT-4's voltages :/
(On second thought, maybe I should have gotten the -4pro... a little bit more for that much extra power)