Had the exact same situation as user jmwsnz, ordered back in January, they held onto my $1500 for 2 months (RTX 3080), then demanded I pay an extra $350 otherwise they would cancel my order. Absolute garbage and will never recommend to anyone ever.
Edit reply: But you didn't try did you? You asked for the new price to be paid, even though generally when a product is paid for at the agreed upon price at the time you honour the sale by supplying said product. But the end result is I'm left with no GPU, and you're left with a bad review and no chance of future sales from my end, I'm sure you can absorb it though.