I'm having a similar problem, I'm trying to do this but it's not working i followed your article ....what does this mean
There are other pricing options also available besides the standard prices.

* One Time Charge
* Price Factor
* One Time Charge Price Factor
* Attirbute Qty Price
* One Time Attribute Qty Price
* For TEXT
* Price per word and free words
* Price per letter and free letters
how do you set these?
this is what i get after setting attributes

1054 Unknown column 'attributes_price_factor_onetime' in 'field list'
in:
[insert into products_attributes (products_attributes_id, products_id, options_id, options_values_id, options_values_price, price_prefix, products_options_sort_order, product_attribute_is_free, products_attributes_weight, products_attributes_weight_prefix, attributes_display_only, attributes_default, attributes_discounted, attributes_image, attributes_price_base_included, attributes_price_onetime, attributes_price_factor, attributes_price_factor_offset, attributes_price_factor_onetime, attributes_price_factor_onetime_offset, attributes_qty_prices, attributes_qty_prices_onetime, attributes_price_words, attributes_price_words_free, attributes_price_letters, attributes_price_letters_free, attributes_required) values (0, '1566', '1', '1', '0', '+', '0', '1', '0', '+', '0', '0', '1', '', '1', '0', '0', '0', '0', '0', '', '', '0', '0', '0', '0', '0')]

please help