I believe they're a good shared hosting, but with the money they ask for, one could get a VPS, and by what you're saying about the renewal price, it seems it gets even worse.
As for contabo, yes, their website it's pretty bad and only recently i've tried them because..."well, it's only 6€!".
I've yet to use them as a production website, but until now, it's all good. Then, you have some feedback here:
https://www.trustpilot.com/review/contabo.de
If it's for clients, maybe yes, try another another hosting. But still, i would pop the 5€ to play around and check it out.
Mainstream options with ok solutions:
Cloud servers starting at € 3.49. A little money gets you lots of cloud. Our flexible billing model and clever interface make it easy to use our cloud servers for all your IT needs.
www.hetzner.com
Fast, reliable VPS hosting for running your custom applications » Unlimited traffic up to 1 Gbit/s ✓ Root access ✓ SSD NVMe storage ✓
www.ionos.com
Başarınız için oluşturulmuş bulut sunucu. Üstün performans ve web sitesi hızı sağlayan yönetilen cloud hosting seçeneğini deneyin.
www.hostinger.web.tr
(Use the translator, as the prices are much lower here, and you can use the code STUDENT15 for 15% off + VPN in america to avoid the taxes)