My brake pipes were greased back min 2006 but one def needs replacing now.

Am I better off replacing them all?

How much are brake pipes cause i was told I could buy a roll and then they can be cut/shaped as needed?

You would need a pipe flaring kit, some pipe unions and a roll of pipe. Have been considering getting these myself for whenever I need a brake pipe.

Don't know if this would do a satisfactory job at flaring the pipes SEALEY Pipe Flaring Kit 9pc Tools n all: SEA.AK505 Tools N All - Authorised suppliers of Britool, Facom, Signet, Koken, Sykes-pickavant, Laser, Draper, Sealey, AST

Also I do not know what diameter pipe or size unions are used.

My mechanic has all the equipment

So I just need a roll of brake piping.

Any ideas on how much that is?

about 15 quid for 25ft