JCPenney has lots of mens extra tall dress shirts on clearance with prices starting at $5.97. Use coupon code PCWINTJC to save an extra 15% off. Shipping is free when you pick it up at your local store, or otherwise it costs $5.95. Starting on 12/26, you can use coupon code ITSOVER to save $10 off orders of $25+.
And for the women, check out the womens tall clearance items including the above tall blazer on clearance for just $14.39.