Most cost-effective way to buy $20,000 USD Bitcoin using Credit Cards?

[danieleither]

I am looking to make a purchase of miners to build a small farm here in the UK. The equipment will cost around £16,500 GBP which is approximately $20,000 US Dollars. The supplier does not accept credit cards however they do accept Bitcoin. As I would like to put the purchase onto my credit cards, I need to purchase approximately $20,000 USD of Bitcoin.

So my question, simply, is what is the most cost effective (and safe) way to do this? I have registered an account with Coinmama and the transaction fees seem reasonable, however they have limits in place which will stop me doing this much.

[petahasher]

Are you 100% sure that you're not dealing with a blatant scam? $20K seems like it should be done through a wire transfer, or some local bank option. You're going to have a real tough time trying to get $20K in BTC using only credit cards.

[danieleither]

The vender is Coinmining Central - who seem to check out as a valid supplier?

Wire-purchase is fine if you have the money sat in a bank account, however I don't (hence I would like to use my credit cards).