If I'm not mistaken, you're off by a factor of 4. I believe that the base model came with 64K of RAM and, as I recall, a cassette tape interface. If there was no tape drive connected, the system would boot into a ROM BASIC interpreter. The 360Kbyte 5 1/4-inch floppy drive was an extra-cost option.
I opted for the massive 10 meg hard drive rather than the then-current 5 meg version for only an additional $250 or so over the $250 5 meg model.
I bought mine in 1984 with the floppy disk. But you could be right about the 64K. It could be I was upgrading from 64K with the 256K card. It’s possible it was a 128K card. Things were a lot different in those days. In any case I eventually added a (I think) 10 MB HDD. I’m sure it is difficult for the youngsters to understand just how valuable that 10 MB was. It was revolutionary.