thanks for the valuable input guys.

Actually I enjoy marketing, designing the product page and some coding. Finally the skills I learnt from my uni degrees and work experience can be used for myself - without bosses and clients telling me what they like to see.

the reason I made a switch is I have some old uni classmates who failed to get employment  but made a fortune by selling online. I was also inspired by a story from my TAX account friend about an uni student client had been making 100k+/month online.

I understand this is a free market if you are not happy with the profit you can move on or leave. I am taking down a few best-selling but low margin items from my shop so I can spend more time investigating other opportunities.