I've collected stamps on neopets for longer than I care to admit. I have restocked at the stamp shop on many occasions including manually rather than using an AB. I've been noticing a slow but gradual increase in the prices of all but the most common of stamps. I've posted some links below that perfectly demonstrate what I'm talking about.
http://www.neocodex....librarian-stamp
http://www.neocodex....an-shield-stamp
http://www.neocodex....e-secrets-stamp
http://www.neocodex....l-gardens-stamp
http://www.neocodex....-fortress-stamp
http://www.neocodex....es-mother-stamp
http://www.neocodex....raspberry-stamp
I have of course handpicked some the graphs that best show gradual increases without wild fluctuations but overall, stamps seem to be going up in price. There is of course the exception of newer stamps which are decreasing in price until they reach the point where the level off naturally. I have many theories of what could contribute to this.
1. The increased number of stamps leads to the stamp shop being more full more often so fewer rare stamps can appear during restocks
2. It's just general inflation not specific to stamps related to an increase in the NP supply
3. More people are collecting stamps because it's just plain awesome and cool to do so
4. TNT just arbitrarily decided that stamps should restock less often than they used to
Thoughts? Has anyone else noticed this? Am I just plain crazy? Have you guys noticed a gradual inflation in your item categories?