It takes only 5-6 weeks to obtain Guyana citizenship including filing in the Immigration Registry.
Similar offers (from countries that do not belong to the British Community) start from US $150,000 (Dominica, Costa Rica). Guyana citizenship fees are much cheaper.
Guyana passport is valid for 15 years from the date of issue. plus 10 year multiple entry visa and settlement visa to the UK are possible now to Guyana passport holders. Change the name when applying for Guyana citizenship.