@Gabriela Cavalcanti Ferreira hello and welcome to the community. I look forward to getting to know you and working together

It's easy making money online when you find auction lots like this to bid on! There's multiple sets, and a number of varieties on the Trans-Tasman. Beautiful.

Here's a few examples of why my preferred buying method is individual items over collections. It takes time, but the returns are worth the effort. The benefits are that you know exactly what you're getting, you have no remaindered collections to dispose of, and you can easily calculate selling prices and anticipated profit margins 1st image - PNG 1960 6d Postal Charges - bought for $10 from the US - sold for $36 2nd image - Saar 1921 5m - bought for $1.50 from the UK - sold for $10 3rd image - NZ 1893 2d Lighthouse with Z flaw - bought for $15 from Canada - sold for $50 4th image - Netherlands 1951 Seagulls - bought for $62 from Canada - sold for $160 Expenditure $88.50, sales value $256, profit after fees around $150

I prefer buying small lots or single items for resale, which is why I rarely have over 1,000 items for sale. This little "ugly duckling" arrived today. It's Trinidad SG18 (1d) Slate-blue, and it looks the worse for wear. In fact it's VFU with four clear margins, as SG comments "(October 1858). Impression less distinct, and rarely showing more than traces of background lines". This is as good as this issue looks, although I'll give it a bath to clear 168 years of dirt and grime. Catalogue value is £850. I paid £75 including postage from an auction site in Sweden

I sit here in hot, sunny, Queensland, listing stamps for sale. On the other side of the planet, a collector in Gibraltar sees one of my listings and buys it. Gibraltar has a population under 40,000, at least one of whom is a stamp collector! My first sale to this destination.