I have 10 pairs. And regular ko naman sila na ro rotate. I find na hanggang 15 siguro manageable pa, pero more than that is probably too much (as a shoe lover).
Also, mas willing nako magbayad for leather shoes, lalo na kung genuine at well built naman. I dont think bibili ako ng sneakers worth more than 5k para lang ipang porma. Its gotta have a purpose, like running or cross training.