If you really want to bet with high stakes, I suggest to check Adkinsbet.com as you can see the maximum bet for each event, even when you did not register.
I've just cecked the site but max bet amounts are very low even for World Cup Qualifications matches.
Probably you should contact the helpdesk on the livechat and ask if they can increase the limit to your satisfaction. Gambling sites likes Adkinsbet who have an official gambling license maybe have at some events lower max stakes. I also know that the basic currency is mBTC, so if you see max stake is 200 then it means it is 200 MBTC which is about 10.000 EUR
If you create an account in Eur, I am sure you will see other limits then 200