Condensed Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
Jan. 31, 2020	Jan. 31, 2019
Cash flow from operating activities:
Net income	$ (184,481)	$ (18,788)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	53,400	51,000
Changes in operating assets and liabilities:
Accounts receivable	(360,040)	70,630
Inventories	276,977	(52,481)
Prepaid expenses and other assets	(45,200)	69,649
Accounts payable	150,788	(200,377)
Accrued liabilities	(96,064)	(135,870)
Customer deposits	167,419	(115,621)
Net cash (used in) provided by operating activities	(37,201)	(331,858)
Cash flows from investing activities:
Purchase of property and equipment	(11,037)	(146,778)
Interest earned on certificates of deposit	(3,389)
Net cash used in investing activities	(14,426)	(146,778)
Net decrease in cash and cash equivalents	(51,627)	(478,636)
Cash and cash equivalents at beginning of year	2,714,764	4,733,510
Cash and cash equivalents at end of year	$ 2,663,137	$ 4,254,874

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