You can try here at NADA RV pricing.
https://www.nadaguides.com/RVs
Go into Travel Trailers/5th wheels
Select Sunline from the Complete list of 2,242 manufacturers
Select your year Sunline,
Select your model Sunline
Not sure if your camper had any options that were offered in 1994. And the value is so low after all these years, it may not matter.
Go to Get base pricing. The suggested retail value is what I have heard was the manufacturers suggested retail price for the year the camper was made.
Hope this helps
John
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Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
Google Custom Search For Sunline Owners Club