by Warkton Tornado No.1 » Sat Dec 22, 2018 3:13 pm
If Ron Moss's Clubman type exhaust is £276 & Kegra's reverse cone Clubman is £450, then (as I would suggest that Ralph's exhaust would match or better both products) you have a couple of prices by which to guesstimate a value.
I doubt that any Lambretta in-house Clubman type exhaust manufacturer can claim to have the same pedigree as Ralph (& Ryan) in rider/tuner ability & his work is always highly prized.
Ultimately, the value of anything is what somebody is willing to pay, & I would ask Ralph himself what he'd charge to make one again. You risk getting your head bitten off, but worth a try......