You paid $100 for a landing page? wished I knew you in college, when I was selling complete, but simple websites to businesses for €25-€75.
I'll answer a few things that I know:
#2: If it is digital, it is free, as you only pay a bit per transaction, depending if you're from the US(~2.9%+30c) or EU(~3.4%+0.35€), there are different prices.
If it is physical, like credit card readers or credit card registers, there are even free options for that available on the net. Free as in Free equipment as long as you use their service.
#3 that is quite easy to make, so don't spend too much on it.
#5 again available from free to thousands of dollars. You can get a wordpress site with woocommerce running with paypal or braintree for free, you can set it up yourself, or pay someone to do it for you.
as for webhosting:
I pay $115 per year for the hosting, and $15 for the domain, whoisguard and SSL encryption. site is fast as it still loads in under 0.6 seconds with 300 people on the site.
I'll answer a few things that I know:
#2: If it is digital, it is free, as you only pay a bit per transaction, depending if you're from the US(~2.9%+30c) or EU(~3.4%+0.35€), there are different prices.
If it is physical, like credit card readers or credit card registers, there are even free options for that available on the net. Free as in Free equipment as long as you use their service.
#3 that is quite easy to make, so don't spend too much on it.
#5 again available from free to thousands of dollars. You can get a wordpress site with woocommerce running with paypal or braintree for free, you can set it up yourself, or pay someone to do it for you.
as for webhosting:
I pay $115 per year for the hosting, and $15 for the domain, whoisguard and SSL encryption. site is fast as it still loads in under 0.6 seconds with 300 people on the site.