As per the title really.
I figure a compressor will cost me roughly as much as a decent floor/track pump.
upto/around £50/60!
ta
jt
anything with a 6ltr tank will be fine for occasional use. I got a Clarkes on for about that from ebay.
Lidl/Aldi do them every so often but they tend to be 25ltr ones which take up a lot more space.
I just bought one of [url= http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_509553_langId_-1_categoryId_165727 ]these[/url] for £60 from halfrauds yesterday. It does the job, and I couldn't find anything cheaper. Aldi was doing much more powerful ones for £85 a couple of weeks ago and some stores will have some left, but I went to have a look at them and they're massive.
the aldi ones are very good value, the main point of having a compressor for tubeless is having a good airflow and IMO a reserve tank so the compressor doesn't need to work all the time.Cnsidering you get loads of 'useful ' tools and the airflow is about 4 times as much and it has a 25 litre airtank, for only £15 more, it seems an obvious choice.
I've had mine for a while and its performed perfectly lots of interesting air tools as well 
hmmmmm
Worksop branch have a load in, and thats not far from me.
If anyone would like one picking up, i'll happily pick another up. they're £82.
cheers,
Jonathan