I bought that same exact model in 2001 for the same price. I'd say its a good price, especially since they have change them for the better since I bought mine. If your dealer has the 52 with the 23 horse, I'd go for that one. The 48 lacks in its trimming ability.
The $5,999 price for the SCAG Tiger Cub is SCAG's national special offer this summer. All SCAG dealers are asking $5,999 for this unit. It is scheduled to run till September, but might be held over since it's going so well for SCAG. My dealer says he can only add my name to a list and I would hope to receive the unit in approx one month. Since the $5,999 price is a national price, I think there might be room to negotiate. I am torn between the SCAG Tiger Cub (19hpKawi/48"), a Ferris IS1000Z (21hpKawi/48"), Hustler Fasttrack (20hp Honda/52"), and Hustler's MiniZ (21hpKawi/52"). Do you have any info that you've come across?