We bought a 1991
Scamp 16 in 2011 for about $6000 and modified it to fit our travels. I never considered the cost of our mods (before today) but I do know you can't buy a Scamp like ours. Of course the cost of my labor is not included. The reality these cost were spread over 5 years of ownership. Most are labor intensive, not costly for materials.
1. 3 Goodyear Marathons, $360.
2. New cushions and a 2" ball receiver from Scamp, $500.
3. 100 watt
solar panel and controller $250.
4. Rear trailer camera, $50.
5. Rear bumper box, 2 fence pole's for storage $60.
6. 5 under trailer storage boxes, $60.
7. Painted bottom and frame, $40.
8. Replaced door lock, $40
9. Added cable and TV jacks, $30.
10. Added doorside support Jack, $30.
11. New curtains, $30.
12. Memory Foam topper, $30
13. Folding table, $30.
14. 5 additional drawers, $70.
15. Overhead dinette cabinet, $50
16. Overhead coach cabinet, $50.
17. Canned Goods slideout Pantry, $30
18. Pots and Pans shelves, $20.
19. 5 AC outlets, 3 with USB chargers, $80.
20. 4 12 Vdc outlets, $40.
21. DC Convertor replaced, $120.
22. 1200 Watt Inverter added, $70.
23. wine rack, spice rack and meds rack. $60.
24. Over rear window and doors shelves, $30.
25. Modified hanging closet for hamper and shelves, $30
26. Replaced all cabinet doors with birch, $50
27. Added cabinet locks, $50.
28. Added Screen door, $60.
29. Added cable and TV outside Jacks, $30.
30. Added 5000 btu air conditioner, $170.
31. Added 20 miscellaneous storage containers, $40.
32. Replaced wrought iron cabinet support $10.
33. Added fans to
fridge cooling, $30.
34. Added collapsible clothes line, $20.
35. Added slides to utensil/silverware drawer. $15.
36. Added breakaway switch $30.
37. Added two AC breakers to breaker box. $30.
38. Replaced water fill and hose connector. $40.
39. Replace bulbs with LEDs, $50. New
40. Add 2 LED spots, $40.
50. Replace florescent with LED Bar, $30.
51. Replace
Tail lights with LED fixtures. $60.
52. Storage location under
fridge for canned goods and beverages, $20
53. Distributed thermometers, inside
fridge, inside and outside temp, $30.
54. Tall Kitchen Faucet, $60.
55. Valve in toilet inlet line, $10.
56. Misc. small repairs, sealants and the like $200
Total: about $3250, probably $4000 spent over 5 years of ownership or so including this and that. These are ball park numbers.
There are lots of benefits from upgrading a trailer. You actually get to figure the whole rig out and more importantly make it more useful. Certainly it looks a little worn, like us, but still functioning and making us comfortable.
If you have time, an older rig is fun and educational. In the process you get functionality that's just not available, certainly from Scamp.