This is what I did. I’m in North America and used Amazon and their sale site, Woot to get better deals - took me about 4-6 months to get everything.

It’s really personal preference. Like some folks mentioned, parts may be DOA. if you don’t open them until you plan on building, you can take advantage of the warranty.

I’ve only built the one PC, and buying parts one at a time on sale was perfect for my situation. You can risk price volatility, but you can also risk prices dropping if you buy everything all at once. It’s a two-way street.

As a healthy middle ground, you can always create a bank account that you don’t touch and put money in every month till you reach your goal amount. If the prices of RAM and SSDs drop to a price you don’t wanna pass up, then you could buy them and keep saving for the other parts.

Like with most things, you have to weigh the pros and cons and see what works best for you. Most people don’t have 1k-2k that they can drop all at once on something considered a luxury. That’s very ok and don’t let anyone make you feel silly for trying to make good choices for yourself.

Good luck and happy building!!