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PREPAID EXPENSES AND OTHER | 9 Months Ended
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Jul. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |
PREPAID EXPENSES AND OTHER | PREPAID EXPENSES AND OTHERAs of the dates indicated, prepaid expenses and other are comprised of the following (in thousands):
| July 31, 2021 |  | October 31, 2020
Contract assets for unbilled accounts receivable, net | $ | 98,812 |  |  | $ | 85,843 |
Prepaid expenses | 75,287 |  |  | 70,647 |
Prepaid VAT and other taxes | 70,735 |  |  | 72,838 |
Product demonstration equipment, net | 35,411 |  |  | 44,793 |
Other non-trade receivables | 17,808 |  |  | 21,981 |
Capitalized contract acquisition costs | 15,067 |  |  | 11,296 |
Derivative assets | 8,598 |  |  | 82 |
CEWS receivable | 1,229 |  |  | — |
Deferred deployment expense | 336 |  |  | 604 |
| $ | 323,283 |  |  | $ | 308,084 |
Depreciation of product demonstration equipment was $7.6 million during the first nine months of fiscal 2021 and $6.5 million during the first nine months of fiscal 2020. For further discussion on contract assets and capitalized contract acquisition costs, see Note 3 above.

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