Introduction:
In the story "The Adventures of Toto," Toto was an expensive deal for the grandfather due to several reasons. The cost of acquiring and maintaining Toto, coupled with the trouble caused by the mischievous monkey, made it a costly affair for the grandfather.

Acquisition Cost:
The initial expense of acquiring Toto was itself a significant burden for the grandfather. He had to pay a considerable amount to purchase the monkey from a tonga driver. This purchase price was likely a substantial sum for the grandfather, who was a poor farmer.

Feeding and Maintenance:
Toto's diet and maintenance added to the financial burden. Monkeys have specific dietary requirements, including fruits, vegetables, and other special food items. The grandfather had to arrange for these foods regularly, which required additional expenditure. Moreover, Toto's mischievous nature often led to breakages and damages, resulting in additional expenses to repair or replace household items.

Medical Care:
Like any other pet, Toto required regular medical care. Monkeys are prone to various health issues and infections. The grandfather had to spend money on Toto's vaccinations and medical treatments whenever needed. These expenses, although necessary, added to the overall cost of keeping the monkey.

Loss of Crops:
Toto's mischievous nature caused significant trouble for the grandfather, leading to financial losses. The monkey would often escape from his confinement and wreak havoc in the fields. Toto would damage crops, destroy vegetables, and disturb the farming activities. This resulted in reduced yields and loss of potential income for the grandfather.

Repair and Replacement Costs:
Toto's misadventures didn't just stop at the fields. Inside the house, the monkey would often create chaos. Toto would break utensils, damage furniture, and cause havoc in the household. The grandfather had to bear the expenses of repairing or replacing these items, which further added to the cost of keeping Toto.

Conclusion:
In conclusion, Toto was an expensive deal for the grandfather due to the initial purchase cost, feeding and maintenance expenses, medical care requirements, loss of crops, and the need to repair or replace damaged items. The mischievous monkey brought financial burdens to the already struggling grandfather, making it a costly affair to keep Toto.