Same as what I think about obtaining any other Transformer -- don't pay above RRP.
Hard to get? Hard to transform? Hard to swallow?
The answer to all 3 is "depends." Some are easier than others.
No idea.
The UK exclusives (TM Claw Jaw & Spittor) are repaints, but they come with a free 'transforming' drinking glass. Non-American new moulds include:
+ Lio Convoy
+ Galvatron
+ Auto Jetter (a cancelled G2 mould)
+ Auto Launcher (another cancelled G2 mould)
+ Moon
+ Big Convoy
+ Magmatron (later released by Hasbro)
+ Stampy
+ Break
+ Cohrada
+ Mach Kick
+ Longrack
+ Heinlad
+ Sling
+ Dead End
+ Bazooka
+ Guiledart (later repainted & released by Hasbro)
+ Sabreback (later repainted & released by Hasbro)
+ Archadis (later repainted & released by Hasbro)
The following are retools:
+ Dirgegun
+ Hellscream
+ Max-B
+ Thrustor
+ Gigastorm (minor retooling)
+ Sharp Edge
+ Hardhead (later repainted & released by Hasbro)
+ Killer Punch
+ Jaguar/Ravage