Why does it annoy you so much? The game is free and it costs less than a tenner on sale for new players. They've got to make money somehow and the content that's been happening in the game recently has been top notch. If you don't like the ships being for sale, don't buy them. I personally bought both the Mandalay, and the Cobra Mk V, and some paint jobs, and I've had far more than my money's worth out of them, especially the Mandalay which has become my absolute favourite ship.
It also gave me the opportunity to buy my son a ship to let him join me Titan bombing in the game for the event in December, which cost me a total of £12.99 for the ARX credits, but it got him a ship that would have taken hours and hours for an equivalent just to take part in the event. And it didn't give him any advantage over anything, he still had a tough time doing it so it's not like it's pay to win, but it did give him a headstart and loads of enjoyment. I've spent far less than a pub meal on both him and myself.
Considering I haven't spent anything else on Elite for years, and I've also only spent around £75 total for ten years of enjoyable gameplay, I really don't see what the issue is.
Just to add, tonight I'm going to be buying the Chrome paint job for my Mandalay, and if I'm feeling flush, I'll pick up the Cobra Mk V as well