As @Patch already gave links. Most importantly the one Subscription in USD - #3 by eko
Note: Although the quote is in Naira you need to use a VPN to get it in USD. You then need to proceed using a USD card or transfer from a Nigerian Domiciliary USD account (all banks in Nigeria have those) or let an overseas friend pay.
Added: Please note that the Nigerian price of N190k on the old website is not valid. The VPN (United States) shows a price of $490. Also note that although the license is in perpetuity it only includes 12 month of maintenance see above link. To get newer versions you need to buy maintenance licenses. For many it is better to use the Cloud Edition which turns out cheaper than paying the Server Lincense and hosting it yourself on some kind of Server of VPS.