With the current exchange rate and PDI and OTR costs I reckon it's going to be closer to £4500........way too much for an air-cooled bike that isn't exactly cutting edge or laden with top level components.
Having owned a Sherco 4.5i from new I reckon parts and especially anything non-standard will be difficult to come by, no matter what the company says. Air and oil filters might be okay, but how long will you have to wait for something like plastics or God forbid, engine cases, exhaust etc.
One of the good things about buying a KTM, Yam, Honda or GasGas is that you can buy standard and bling parts and have choice about where to get the parts from, so your steed isn't off the road for long.
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Caution - the poster may well have been drinking........
The PR5 looks like a reasonable alternative to the now defunct TTR250 and 230CRF with fuel injection and modern suspension, light weight and low maintenance.
If the price is right once imported into the UK then it has to be a winner.
Unlike CCM's Chinese built CRF230 copies, these are actually modern design and tech machines built with quality components and utilising old tech tried and tested engines coupled with modern day fuel injection/ignition.
Mark, they are an established (1987) Portuguese company, should be no harder to get parts than Gasgas, Reiju, Beta etc.
Its a well made bike by all accounts with quality parts, the question is the power delivery and longevity of the Honda copy engine, if you search the reviews they are not bad.