That will be a shop importing in mass directly from the factory,
and promising the insurance charges on itself.
If anyone who is interested in your watch were to do a quick
price check on the net, he/she will realize he/she can buy the
watch at USD44.46 (inclusive of shipping to Asia
<Singapore>), which is 63.89SGD.
Consumers will not like to hear reasons like "hey, you know
shops in Singapore are selling this for 120SGD?" when they know
they can get it at a much cheaper price with a direct import. Yes,
shops are INDEED selling it at that price, but remember consumers
are buying with cheaper price priority, not pitying the seller.
And, through retail selling, people are willing to pay more for
insurance and warranty, again adding up to it's high price, you're
a second hand seller, are you providing your own warranty? I don't
think so,