In the UK, the cost of a Doc M disabled toilet pack starts from around £400. If you are converting an existing commercial loo, then add some £2-3,000 labour costs. If you are creating a new disabled facility, the costs rise depending on what needs to be done with the soil / waste stack and what plumbing, etc. is required. 

The cost of making an existing toilet (normal or disabled) is minimal. These are the 4 basic components required:

1. A narrow shelf and supporting brackets: £15

2. A hook on the shelf: £2

3. A hook on the back of the door: £2

4. A laminated stoma friendly sign for the wall / door: £2

Installation should take less that 1 hour, which will also minimise labour costs. 

The cost of converting a existing toilet is minimal and can make an ostomates life more comfortable.