Hussy - you can't get another eye so please don't fall for 'the right price'. eg if you were to go abroad someone undoubtedly would laser your eyes for you, and to hell with the consequences.
I have not had a detached retina but a similar condition, a PVD, where the inside of the eye pulls away from the retina. You are fortunate that your detached retina could be lasered back on - mine is not treatable with current technology.
To answer your query properly you need to find out why the detachment happened - was it trauma? extreme shortsightedness / eyeball changing shape?
Laser treatment is at present only successful for certain types of eyesight, and extreme shortsightedness puts you out of the frame.
The other thing to consider is that laser treatment can only be temporary even if successful as your eyes change over time, lasered or not.
A new procedure involves replacing the lens of the eye with an 'intra-ocular device' ie a bionic lens. If you are interested in this a specialist with a good international reputation is Arthur Nylander at Royal Blackburn Hospital who also has a private clinic in Manchester.
He offered me this new procedure on NHS but I chickened out, and find I am happy at present with soft contact lenses alternating with specs.