if he wants you to arrange a courier make sure the seller will box it properly,
i used paisley once and they refused to collect as they said it was unsuitably wrapped, ended up paying for and losing the bike as they wouldn't refund (ebay seller, collection only in listing, i asked about my own courier they said yes), and lost the shipping as they (paisley) said it was the senders fault they hadn't collected,
luckily it was a dirt cheap bike that i only wanted the frame, could of been a real loser otherwise as it wasn't worth the cost of going and collecting
i won't buy anything any more that says arrange your own courier, unless it's close enough to pick up if it all go's pear shaped
don't want to be a downer on your bike but it's worth checking that they are prepared to box it properly