No great values, but many interesting stamps that got me started with countries and places I never even know existed--like Victoria Here is a scan (sorry about the quality) of a welcome set that got me started on Newfoundland recently.
About 9 years ago I found a 2 shilling maroon Kangaroo and map of Australia with inverted watermark. Swapped it for 2kgs of KGV's on paper and found 2 Australia KGV's 3d blue, perforation comb 14, perfin OS, with small multiple inverted watermarks. Plus heaps more finds that I have now forgotten.
The one that is the 2nd best will sell on eBay today.