Am I getting mugged off here, or has car insurance gone mental in the last few years?

I haven't had a modded/performance/"hot" car for a good while now, probably 10 years or so, and I lost all my NCB because I didn't insure anything for about 5 years in the mid 00's. But since insuring again in '08, my premiums haven't been cheap, and despite accruing 5years NCB, my renewal this year was £568 (£658 if choosing instalments)! I'm 32, clean license, classed as a professional driver, work for one of the biggest motoring organisations in the country, no accidents/claims/convictions, 5years NCB as stated, drive a 2L car with only 150bhp, not new, not expensive, not desirable (in terms of how often stolen) and yet £568 for TPF&T!

Did a Go Compare comparison, and ticked the fully comp box, and best I got down to was £446 from Quote Me Happy - the AA wanted over a grand! But most of the quotes were coming back in the high 500's, to low 700's.

Fuck me, I was paying £950 as a teen on my first car, and £700 in my early 20's on an RS Turbo! How can it be pretty much the same price for an IS200 ten years later?!?!

In the end I got my current insurer to match Quote me Happy, albeit with a slightly higher excess, but matched at £446 for fully comp, plus they increased my legal cover and personal injury payouts too.

Where's this sub £300 a year fully comp I was promised when I got to this age