To repeat what I wrote elsewhere, several threads on this subject currently ... when in the States recently I bought a copy of PaintShop Photo Pro x3 for $15 and discovered it had pretty well all that my more recent copy 'x4' has. That was on Amazon ... P&P extra. Like Photoshop it is a complicated programme and will take time to fully understand but it has quick fixes for starters. There is an x5 version just out but I doubt if there is much difference ...I have used version 8 occasionally which is still in my computer, it doesn't have a limit on the number of pixels it will handle when doing panoramas like the newer versions do..
edit. .... note x=10 so versions go 8,9,X,X3,X4,X5 ....