Installation is no problem, as andyp says it is removal that's the problem.
There are now specific bearing puller kits for PT though.
There is "Power Torque +" which doesn't need a puller, but it was only introduced with Potenza so you won't be saving any money over UT.
A quick search shows the cheapest PT are around £60 new and you can get NOS UT from eBay for similar.
Where are those NOS PT cranks for £60 you speak of?
http://www.ribblecycles.co.uk/campagnolo-centaur-blk-pt-10spd-c-set/#pid=5781
@dbr started
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Installation is no problem, as andyp says it is removal that's the problem.
There are now specific bearing puller kits for PT though.
There is "Power Torque +" which doesn't need a puller, but it was only introduced with Potenza so you won't be saving any money over UT.
A quick search shows the cheapest PT are around £60 new and you can get NOS UT from eBay for similar.