yeah, thanks, ive already decided to buy hardware wallet, paying 80$ for saving 500$ is a good idea
Your peace of mind is worth.
And your BTC will become more valuable in time (we all hope at least), and your 100usd will be very cheap.. you can sell some BTC in a few monthse to pay for it
Also, never keep your money on exchange, even while waiting for your ledger to arrive.
It's better to stay on Electrum than on any exchange.