Jumia and konga are the two biggest online shops in Nigeria, they deliver to almost everywhere within the country. Ali baba also ships to Nigeria too.
Creating an account is like A, B, C and wouldn't be a problem for anyone so I do not see the need for a middleman. Just send the steem to Mrprecious he can make the selection himself and order them.

Almost everyone has a konga and/or Jumia account, it's nothing special unless you want a specific person whom you believe you can trust.