Hi.

 

I am looking for a freestanding Flueless Gas Fire.

 

Can anyone recommend one which is reliable and not too expensive?

 

Thank you in advance

Ethanol burner, not as much heat but look nice. 
 

I would reconsider,  you will be living inside a chimney with consequential health implications 

 

Also gas >CO2 + H2O + pollutants  so it will add lots of moisture which can finish feeding moulds 

Also requires free air ventilation within the room and some of them have a maximum daily duty cycle due to products of combustion and catalytic converter. If you must go down the gas fire route, then possibly consider a balanced flue freestanding fire, which you can get.