>>6210698You have two options.
5 inch Good vs. Evil two pack for Red & Green (releasing in the spring) and the 5 inch Then & Now two packs for the rest of the team. Each 2 pack is $20, so it will cost $100 for the six MMPR and 4 movie counterparts. Sell off the movie figs (you can probably get at least $20 for them) and you'd be looking at $80 or so.
Then there's the 6.5 inch Legacy line. The core 5 MMPR are being re-released this summer (with weapons this time) for $20 each, but they'll be a metallic color, and you'd have to get the original release of Green (who won't match, and commands aftermarket prices) or wait for a potential metallic Green release.
Personally I prefer the 5 inch figures. The fact that they're making a new Rita, Putty, Alpha, and maybe even Goldar in that scale makes them much more appealing than the 6.5 inch figures who have no one but other Rangers to interact with. They're also in scale with tons of old and current villains as seen here
>>6209683. Their weapons also combine to form the Power Blaster (Bandai stated the legacy figure weapons won't combine).