...that will do this at a price but they're not cheap.

You might find someone else has already converted them and is torrenting the DVD. Check the usual torrent sites. That's how I got my Stones 25x5 DVD.

You might even find someone here has one or more of the DVDs you want; post a list?

Buy one of those combination VHS/DVD recorders. I've got a Philips one. They're a lot cheaper than they used to be. This sort of thing:

http://www.amazon.co.uk/Philips-DVDR3510-DVD-Recorder-Combi/dp/B000Q9IXR...

but I do quite a lot of recording VHS into my computer for editing or making DVDs. The following assumes you already do things like put family videos on the computer:

I use this little analogue to digital converter box

http://eshop.macsales.com/item/Canopus/77010138100/

which cost about £90. It connects out of the 1 video and 2 audio phono sockets at the back of the VHS (if you've only got one of those rectangular Scart sockets on the VHS then you can get an adaptor from that to phono) and goes into the firewire (200 or 400) socket of the computer.

From there on it's just like playing from a domestic video camera into the computer - and whatever video editing programme it has. You'll likely need an external hard drive to record on to as a whole concert film take up a lot of space. Once you've played the VHS in, export it from the editing programme and burn it onto DVD, which is a simple 'few clicks but wait half the evening for it to finish' step. For longer movies you may need to burn onto a dual layer DVD (available from all good stockists) as the usual single layer ones mightn't have enough space.

Several word of warning though:

1) Your DVDs will be only of VHS quality, not HD Blu Ray 5.1 smell the guitarist's sweat o vision

2) Almost all VHSs are in the 4:3 apsect ratio (i.e. pre widescreen tellies) so must make sure the video editing programme handles the film in 4:3 (there's a chooser somewhere in the clip preferences usually). Failure to do this can result in your favourite band looking alarmingly portly.

Hope that helps. It's how my kids watch Yellow Submarine without me having bought the DVD...

Assuming you still have a VHS player most USB video capture devices will come with the software you need to capture, author and burn DVDs. If you allow about 3G per hour disk space you probably won't go far wrong but remember you'll need to capture the file, then edit it (and probably save it as a different file) then author the DVD (which normally takes twice as much space as the finished DVD). If your PC is more than a few years old then be prepared for the process to take a long long time. If you use Costco they often have a Roxio kit for about £40 - I don't know how good it is though I have a Hauppage WinTVUSB which I bought more than 4 years ago and I've always been very pleased with the results.

I got this system

http://www.cbadigital.co.uk/videoproducts.htm

You get a little cable/interface thingy and a little software programme and it generates a .dv file which you can load into whatever video editor you use. It seems to work OK based on light use. Have a good Google though - there are lots of so called solutions out there and half of them don't work based on my research. This one at least comes from a UK company with a phone number etc, rather than eBay coming from who know where. For 35 quid it seemed worth a punt and so far is working OK.