...i find it stupid because the cost of the ship plus 2 of those lasers you almost can buy a python which is definitely a better option! So something must be done with the price system. There are killing the game!
What are you going to fit the Python with then?
I have about 8million credits in cash available, I fly a Python (fitted for mining and trading...

), and I have an exploration fitted Asp.
As I earn more credits (not a hardcore trader), I upgrade a new part on the ship. If I could do this from the bat as soon as I'd bought the ship, I'd already be flying a fully kitted out Python, and noone would EVER buy anything other than D rated for Exploration, or A rated for everything else.
Yes, Size 3 lasers are expensive, and they can wreck anything smaller than the ship they're fitted on, but you don't HAVE to fit it with that, it's perfectly viable to fit out with Size 2's until you can afford the upgrades (+Power +Distributor).
Pricing is fine, in my opinion.