I would never ever consider buying either a professionally converted or privately converted van as you honestly don't know what you are buying!
My base van cost me £3,500 and I know I could have converted it within your budget
@RAW, however as my plan was to build it to the highest standards I could achieve whilst still utilising my DIY skills I bought and fitted only brand new components such as the 12V fridge, hob, sink etc. and of course splashing out getting on for £500 on the spray foam insulation. The reason I went down this route was that we had decided to do the best we could on an old van, then if we liked it we would sell it and buy either a new or nearly new van and do it all over again......... and that's where we failed, as we love 'Millie' so much and wouldn't change a single thing about her, that we have saved the £30k that would have cost!!
Over the years I have watched in absolute gob smacked amazement what the guru of low cost conversions, i.e. the utterly amazing
@n brown has achieved and now on here there is another perfect example in the excellent conversion that
@Edina turned out and now we also have
@GEOFF using his glassfibre moulding skills to convert a LDV Maxus to such an amazingly high standard and yet without throwing the ££££ boat out.
So as far as I am concerned RAW, go on grab a van by the balls and do it yourself, my only suggestion being to only consider doing it in a van that has a fully galvanised body that doesn't melt in front of your eyes into a pile of rust!
Phil