If the minimum points you can purchase is 2,000 then that's probably the best you can get. The only other way to get 500 points would be to actually earn them - though you would need to wait for them to credit.
If you have a particularly award in mind and want the points quickly, I think buying the points is your best bet. USD$80 is not all that bad.
Oh, and I see that this is your first post. Welcome.
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I have heard somewhere that there is a trade in FF points - some organisation buys and sells them. I presume I would still be locked into the Emirates system at some stage (and I would need to pay the transfer fee), but it struck me this would be cheaper. ...
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Thank you for the welcome - yes, I have just started interacting with this site.
I understand I could earn them - but the easiest ways (or credit cards, car hire etc) are locked into an Australian carrier and to change them and then change back is a pain.
I have heard somewhere that there is a trade in FF points - some organisation buys and sells them. I presume I would still be locked into the Emirates system at some stage (and I would need to pay the transfer fee), but it struck me this would be cheaper. I agree that USD80 is not a lot, but I am interested in finding my way around a system where I can get better benefit from these loyalty schemes. I think these loyalty schemes are skewed too much in the airlines' favour.