I believe the Yak is "owned" by Yakolev now as part of the deal for the factory's input into the design/build etc. That model will always be an exception - and a stunning model for it even if not really 'playing fair' [X(].

As for costs of all the scale WJM models, I think you're assuming they're stupid money. To be honest I dare say most are purchased and kitted out at a discount (not free) as those that compete at world level are likely to be known/accomplished pilots who manufacturers wouldn't mind 'subsidising' in order to see their equipment represented at world level. Cheap advertising etc....

The number of BVM Ultra Bandits and P200 combos flying around the US means there are plenty of people with the cash to enter the WJM with a competitive model. The new C-ARF/Skygate Hawk is a great example of a WJM quality model that won't bust the bank.

Having said that, there is no hobby/discipline you can compete with at World Championship level "cheaply". It's always going to cost but I don't think the model cost should be prohibitive. Flying skills, building skills, time off work, time for practice etc - they're you're biggest hurdles to overcome!!!