i was lucky to find a 430 on gumtree for 20 bucks - and i really couldnt complain for that price. problem was it just wont grind fine enough and makes a heck of a mess. the grinder adjustment is a nightmare to work with but i DID eventually get it to work reasonably well. though the steps meant it was either gushing or over-extracting. im not the most handy of people and didnt bother tinkering with it any further. It currently serves a moka pot in a friend's house who is enjoying it to bits.
a quick search on the forum will tell you the 480 is quite modifiable. i havent tried modding mine yet (left it for the other people in the house to use with their woolies beans) but it does the job even before the mods (just watch out for grind retention in the chute!). all that said before i got my 'shiny italian grinder' i was actually happier with the results from my hario slim mill than the 480. it does produce quite a bit of fines though.
thats my 2 cents anyway. before you do jump out at the 480 though, big w had em for sale for a 100bucks a piece. makes you wonder how much they're really worth... but also, if you're patient and willing enough to fish around for bargains im sure you can get one for much less than the retail 160-200 price range.