Not me
The slave owners bought their slaves at auctions.
A slave owner can have as many slaves as they can afford to buy and support.
People that would buy a slave would buy them because they needed work to be done. They were called, "slave owners". Slavery is now illegal. The Civil War fought against slavery.
The slave could work and get payed and buy there self out. The slave could work normally and live. The slave could escape to Canada and live.
At slave-auctions, which were widely advertised
Slave trade was when people would buy slaves and have them work on their lands.
slave trade was when the masters that owned the slaves would sale them and other masters would buy them.
Ships from Europe would buy slaves from other slave owners in Africa (YES there were slave owners in Africa!) and then transport them into docks in southern states bordering the Atlantic. There owners from the States could buy or trade them.
They bought them at slave markets and also bread them; children of slaves were regarded as slaves.
The king owned the colonists, so... The king owned the first colonist that bought a slave.
They would buy new ones