Well I don't understand what you mean by the purchase price is shown higher than the current price. But if what you mean is Bitcoin price fluctuation then that is the nature of Bitcoin, you don't expect it to be stable like USDT, but nevertheless you must still buy because the price can never be stable. To invest in Bitcoin is simple, you don't necessarily need to buy 1 Bitcoin, but can buy as little as you can and HODL till you meet a certain requirement. Bitcoin can be bought in fractions, don't allow yourself to get confused. Look for someone who will educate you personally on how to make purchases in cex exchange and send to your non custodial wallet. And make sure you are investing from your discretion fund and not from money needed for other necessary expenses otherwise you will sell it down the road to solve problem. Bitcoin investment is a long term investment and should be done effortlessly and tirelessly to  without overdoing it.

The only strategy that will fit your situation now as a person who lacks fund is the lump sum method. This means you can only invest once at ago when you get fun or bonus from anywhere. But if you have a good income source then I will have sudgested the DCA method.

Well I don't understand what you mean by the purchase price is shown higher than the current price. But if what you mean is Bitcoin price fluctuation then that is the nature of Bitcoin, you don't expect it to be stable like USDT, but nevertheless you must still buy because the price can never be stable. To invest in Bitcoin is simple, you don't necessarily need to buy 1 Bitcoin, but can buy as little as you can and HODL till you meet a certain requirement. Bitcoin can be bought in fractions, don't allow yourself to get confused. Look for someone who will educate you personally on how to make purchases in cex exchange and send to your non custodial wallet. And make sure you are investing from your discretion fund and not from money needed for other necessary expenses otherwise you will sell it down the road to solve problem. Bitcoin investment is a long term investment and should be done effortlessly and tirelessly to without overdoing it.

The only strategy that will fit your situation now as a person who lacks fund is the lump sum method. This means you can only invest once at ago when you get fun or bonus from anywhere. But if you have a good income source then I will have sudgested the DCA method.